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Elsevier, Inorganica Chimica Acta, 12(359), p. 3903-3910

DOI: 10.1016/j.ica.2006.04.011

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Spectroscopic characterization of the polycrystalline copper(I) di-n-butyldithiophosphate cluster – Cu8[S2P(O-n-Bu)2]6(μ8-S): Solid-state 31P CP/MAS and static 65Cu NMR studies

Journal article published in 2006 by Daniela Rusanova, Kevin J. Pike, Ray Dupree ORCID, John V. Hanna, Oleg N. Antzutkin, Ingmar Persson, Willis Forsling
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

A polycrystalline copper(1) O,O'-di-n-butyldithiophosphate cluster compound, Cu-8[S2P(O-n-Bu)(2)](6)(mu(8)-S), was synthesized and characterized by P-31 CP/MAS NMR at 8.46 T and static Cu-65 NMR at multiple magnetic field strengths (7.05, 9.4 and 14.1 T). The principal values of the P-31 chemical shift tensor and the Cu-65 chemical shift and quadrupolar splitting parameters are presented. The data are compared to those for the analogous octa-nuclear cluster compounds [Cu-8(S2P(OEt)(2))6(mu(8)-S)], [Cu-8(S2P(O-n-Pr)(2))(6)(mu(8)-S)] and [Cu-8(S2P(O-i-Bu)(2))(6)(mu(8)-S)]. The transverse relaxation time constant, T-2, for the [Cu-8(S2P(O-n-Bu)(2))(6)(mu(8)-S)] cluster compound was found to be 160 +/- 8 ps. Possible intra-molecular motions in the cluster structures in terms of size and branching of the hydrocarbon chains are discussed as reasons for the different Cu-65 NMR responses of the systems. (c) 2006 Elsevier B.V. All rights reserved.